Version 4.2 is now available for download. There is a small fee for downloading memtest from this site. The fee is set at $1.39 for version 4.2 and is being used to offset the costs of providing and maintaining this site. Please note that version 4.14 is still available for a download fee of $0.99. Both versions support MacOS X releases 10.2.8 and later. Please do not download memtest if you are running an earlier version of MacOS.